WO2009043263A1

WO2009043263A1 - Method, device and system for distributing and acquiring the location area identification information

Info

Publication number: WO2009043263A1
Application number: PCT/CN2008/072405
Authority: WO
Inventors: Xiaolong Guo; Wanqiang Zhang; Peng Zhang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-09-27
Filing date: 2008-09-18
Publication date: 2009-04-09
Also published as: CN101400041A; CN101400041B

Abstract

A method, a device and a system for distributing and acquiring the location area identification (LAI) information are provided in the present invention, wherein the method includes the steps: if a control plane entity (CPE) determining the distributed LAI information as the first LAI information, then sending a message with a special identification information to a UE according to the first LAI information; the UE acquiring the corresponding first LAI information according to the special identification information after receiving the message with the special identification information. The above CPE sends the special identification information to the UE instead of sending the LAI information repeatedly in the case of determining that the LAI information distributed to the UE is the same as the one distributed before, thus it will not introduce the unnecessary burden to the network, especially in the case that the CPE distributes the excessive LAI information, and it will save more air interface resources.

Description

Method, device and system for allocating and obtaining location area identification information

This application claims the priority of the Chinese patent application filed on September 27, 2007, the Chinese Patent Office, the application number is 200710077387.0, and the invention is entitled "Method, Device and System for Assigning and Obtaining Location Area Identification Information". The citations are incorporated herein by reference.

Technical field

The present invention relates to the field of mobile communications, and in particular, to a method, device and system for allocating and acquiring location area identification information.

Background technique

In the third generation mobile communication system, the most remarkable one is the universal mobile communication system (UMTS, Universal Mobile Telecommunications System) that uses the wideband code division multiple access (WCDMA) air interface technology. At the same time, UMTS is also a third-generation wireless communication network technology standard defined by the 3GPP (Third Generation Partnership Project) organization. As shown in Figure 1, the UMTS system consists of three parts, namely the core network (CN, Core Net), the universal mobile communication system terrestrial radio access network (UTRAN, UMTS Terrestrial Radio Access Network) and user equipment (UE, User Equipment). ) Composition. Among them, the UTRAN includes a number of radio network subsystems (RNS, Radio Network Subsystem) connected to the CN. An RNS includes a Radio Network Controller (RNC) and one or more base stations (Node Bs), each of which covers one or more cells.

CN is logically divided into circuit switched (CS, Circuit Switched) domain and packet switched (PS, Packet Switched) Domain. The mobile switching center/visitor location register (MSC/VLR, Mobile Switching Center/Visitor Location Register) and the Gateway Mobile Services Switching Center (GMSC) belong to the CS domain, and the general packet radio service support node (SGSN) The Serving GPRS Support Node and the GPRS Gateway Support Node (GGSN) belong to the PS domain, and the Home Location Register (HLR) belongs to the functional node shared by the CS domain and the PS domain. The MSC/VLR performs the functions of control, management, authentication, and encryption of the CS domain. The GMSC is the network management of the Mobile Switching Center (MSC) and is responsible for connecting with other fixed or mobile networks. Currently, in 3GPP, various vendors are actively studying Long Term Evolved Network (LTE) or System Architecture Evolved (SAE), in which LTE is used to provide a method for reducing delay and increasing user data rate. The improved system capacity and the covered low-cost network use the PS domain service, and the bearer network is all IP bearers. Figure 2 shows an existing LTE/S AE network architecture. In the evolved packet core network, the Mobility Management Entity (MME) function is to save the mobility management context of the UE, such as the identity of the user equipment, mobility management status, location information, etc., and to the non-access layer. (NAS, Non Access Stratum) signaling processing, responsible for NAS signaling security.

The SAE gateway includes a Serving Gateway (S-GW) and a Packet Data Network Gateway (P-GW, PDN Gateway), where the S-GW and the P-GW are two logical entities, which may exist in the same or different physical entities. Physically. The S-GW is configured to save the user plane context of the UE, such as the IP address and routing information of the UE, and perform lawful interception, packet data routing, and the like. The interface between the S-W and the MME is S11, which is responsible for communication between the MME and the UPE, and performs interaction between the mobility management information of the UE and the session control information.

The MME passes through the Sl-MME, and the S-GW is responsible for the connection between the control plane and the user plane through the S1-U and the EUTRAN network, respectively. At the same time, the MME passes the S3 interface, and the S-GW communicates with the 2G/3G through the S4 interface. The SGSN is connected, and is responsible for the mobility control plane anchor and user plane anchor functions of the UE between the 3G and the SAE network, respectively.

The P-GW is responsible for the user plane anchor function of the UE accessing the packet data network, communicates with the external packet data network through the SGi reference point, has the function of packet routing and forwarding, and is responsible for the policy charging enhancement function, based on each user. Group filtering function, etc. The P-GW is connected to the S-GW through the S5 interface, and transmits control information such as bearer establishment/modification/deletion, and packet data routing.

The Policy and Charging Rules Function (PCRF) transmits QoS and charging policy control information to the p_GW as a Policy and Charging Enforcement Function (PCEF) through the S7 interface.

There are restrictions on signaling between different radio access technologies (RATs) between SAE and Pre-SAE (that is, 2G/3G networks), that is, if UEs move between different RATs (such as 2G/3G networks and evolved networks) The UE will be stationed in different networks and frequently cause the network registration process. The frequent network registration process is a great waste to the air interface. As shown in Figure 3, the multi-RAT network structure, RA1 and RA2 are the existing 2G/3G routing areas. The existing 2G/3G UEs initiate routing area updates every time the RA is replaced (RAU). , Routing Area Update) process. Of course, the UE also has a periodic location update process without changing the RA. The role is to enable the network to know that the UE is still in the network, prevent the UE from leaving the network, and the network does not know and continuously page the UE. In the SAE network, in order to prevent the UE from frequently initiating a TAU procedure when replacing the tracking area (TA, similar to the 2G/3G RA), the MME allocates a tracking area list (TA List) to the UE. A set of TAs is included in the tracking area list, and the UE does not need to initiate a TAU process when moving within the group of TAs, thereby saving network resources. Of course, in this case the periodic location update process is still performed. For the TA list, the network side may allocate the same TA list to all UEs according to the pre-configuration, or may allocate different TA lists to the UE according to the mobility of each UE. Different radio access technologies (RAT, Radio Access) with Pre-SAE (ie 2G/3G network) Technology) Inter-limited signaling is an important issue. For example, when a UE moves between different RATs (such as a 2G/3G network and an evolved network), the UE will change to camp on different networks and frequently cause the network registration process. The network registration process is a great waste to the air interface. As shown in FIG. 4, it is a periodic tracking area update process initiated by the UE in the prior art: Step 401: The UE sends a TAU request message to the MME, where the message carries information such as an update type, and the update type indicates a periodic TAU;

Step 402: The MME determines, according to the information reported by the UE, whether it needs to perform authentication with the UE, and if necessary, performs a security function.

Step 403: The MME determines that the tracking area update request of the UE can be accepted, and sends a TAU accept message to the UE, where the message carries information such as the TA list and the S-TMSI. If the MME allocates a new S-TMSI to the UE, the new S- TMSI information, if no new S-TMSI is allocated, carries the old S-TMSI information;

Step 404: If the UE receives the new S-TMSI information allocated by the MME, return the TAU complete message to the MME to confirm that the newly allocated S-TMSI has been successfully received. In the above update process, when the TA list allocated by the MME to the UE does not change, the TAU accept message still needs to carry the unchanged TA list information, which brings unnecessary burden to the network.

Summary of the invention

The inventors of the present invention found through in-depth analysis that in the prior art, due to poor management of the TA list (TAlist), a limited amount of wireless side resources is wasted. To solve the above technical problem, the embodiment of the present invention provides a method for acquiring location area identifier information, including the following steps: receiving a message carrying special identifier information; and acquiring corresponding location area identifier information according to the special identifier information. In order to solve the above technical problem, an embodiment of the present invention provides an apparatus for acquiring location area identification information, including:

a receiving unit, configured to receive a message carrying special identification information;

An obtaining unit, configured to acquire corresponding location area identifier information according to the special identifier information. In order to solve the above technical problem, an embodiment of the present invention provides a method for allocating location area identification information, including the following steps:

When the location area identifier information is the first location area identifier information, the corresponding message carrying the special identifier information is sent according to the first location area identifier information. In order to solve the above technical problem, an embodiment of the present invention provides an apparatus for assigning location area identification information, including:

And an allocating unit, configured to determine whether the allocated location area identifier information is the first location area identifier information, and the sending unit is configured to send, according to the first location area identifier information, a message carrying the special identifier information.

In order to solve the above technical problem, an embodiment of the present invention provides a method for allocating and acquiring location area identification information, which includes the following steps:

When the control plane entity determines that the allocated location area identifier information is the first location area identifier information, the control plane entity sends a message carrying the special identifier information to the terminal according to the first location area identifier information;

After receiving the message carrying the special identifier information, the terminal acquires the corresponding first location area identifier information according to the special identifier information.

In order to solve the above technical problem, an embodiment of the present invention provides a system for allocating and acquiring location area identification information, including:

a control plane entity, configured to determine whether the allocated location area identifier information is the first location area identifier information, and if the first location area identifier information is sent, send a message carrying the special identifier information;

a terminal, configured to receive the message carrying the special identification information, and according to the special identification letter The corresponding first location area identification information is obtained. Compared with the prior art, the embodiment of the present invention has the beneficial effects that: when the control plane entity determines that the location area identifier information allocated to the terminal is consistent with the original allocation, the control plane entity sends the special identifier information to the terminal without repeating The location area identifier information is sent, which will not impose unnecessary burden on the network. In particular, when the control plane entity allocates more location area identifier information, more wireless side air interface resources will be saved.

DRAWINGS

1 is a schematic structural diagram of a UMTS system in the prior art; FIG. 2 is a schematic diagram of an LTE/SAE network architecture in the prior art; FIG. 3 is a schematic diagram of a multi-RAT network structure in the prior art; FIG. 5 is a flowchart of a first embodiment of a method for allocating and acquiring location area identifier information according to the present invention; FIG. 6 is a flowchart of a second embodiment of a method for allocating and acquiring location area identifier information according to the present invention; 7 is a flowchart of a third embodiment of a method for allocating and acquiring location area identification information according to the present invention; FIG. 8 is a flowchart of a fourth embodiment of a method for allocating and acquiring location area identification information according to the present invention; FIG. 10 is a flowchart of a sixth embodiment of a method for allocating and acquiring location area identification information according to the present invention; FIG. 11 is a flowchart for allocating and acquiring a location area identifier according to the present invention; FIG. 12 is a schematic structural diagram of a first embodiment of a system for allocating and acquiring location area identification information according to the present invention; FIG. 13 is a schematic diagram of the present invention; A schematic structural diagram of a second embodiment of a system for allocating and obtaining location area identification information. detailed description

In order to make the technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings. As shown in FIG. 5, the flowchart of the first embodiment of the method for allocating and obtaining location area identifier information according to the present invention mainly includes the following steps: The first step is: the control plane entity allocates location area identifier information, and the specific allocation steps include: Step 1: Determine whether the assigned location area identifier information is the first location area identifier information. Step 2: If yes, send a corresponding message carrying the special identifier information according to the first location area identifier information.

The second step is: the terminal obtains the location area identifier information, and the specific obtaining step includes: Step 3: The terminal receives the message carrying the special identifier information sent by the control plane entity; Step 4, acquiring the corresponding location area identifier information according to the special identifier information . In step 1, the control plane entity determines whether the allocated first location area identifier information is the original location area identifier information; in step 2, the corresponding special identifier information may be a flag bit, or a special one. The reason value, or the empty location area identification information, or the message does not carry the location identification information parameter; in step 3, after the terminal receives the special identification information in step 2, in step 4, the terminal according to the special identifier The information acquires the location area identification information corresponding to the original use. In step 1, when the control plane entity determines that the allocated first location identifier information is a location location list corresponding to the location area identifier information that is added or decreased correspondingly on the originally used location area list, in step 2, sending The corresponding message carrying the special identification information is an indication of increasing or decreasing at least one location area identification information and a message of the increased or decreased location area identification information and the changed location area identification information; in step 3, the terminal receives the step 2 After the message carrying the special identification information, in step 4, the terminal acquires the original used bit according to the special identification information. A list of location areas corresponding to the location area identification information is added or decreased corresponding to the location list. The location identifier information in the location area identifier information is 0. The location identifier information is 0. Before step 1, the method further includes the steps of: receiving the request information of the location area update; determining that the authentication is required according to the request information, and performing the security function.

Or, before step 1, the method further includes the step of: controlling the plane entity to initiate temporary mobile subscriber identity information reallocation. The location area identifier information is a tracking area identifier or a tracking area list or a routing area identifier or a routing area list or other location area identifier or list. The control plane entity may be an MME or an SGSN, and the temporary mobile subscriber identity information may be P-TMSI or S-TMSI.

As shown in FIG. 6, a flowchart of a method for allocating and acquiring location area identifier information according to the present invention, where the TAU initiated by the UE includes the following steps: Step 601: The UE sends a TAU request message to the MME. The TAU request message carries information such as an update type, such as an update type indicating a periodic TAU.

Step 602: The MME determines, according to the information reported by the UE, whether it needs to perform authentication with the UE, and if necessary, interacts with the HSS to perform a security function.

Step 603: The MME sends a TAU accept message to the UE. In step 603, the MME first determines whether the TA list is changed for the UE. If the TA list allocated by the MME to the UE does not change, the MME sends a message carrying the special identifier information to the UE to indicate that the TA list has not changed. The special identification information may be a flag bit or a special cause value, or may be an empty TA list or no TA list information. The specific manner of sending the empty TA list is as follows: The TA list carried in the TAU accept message sent by the MME is in the TLV (type length value) format, and the length of the parameter TA list is 0, indicating the TA list. If the parameter is not sent, the TA list parameter is optional. If the parameter is not carried in the TAU accept message, the original TA list is still used.

If the TA list allocated by the MME to the UE changes, but the change is only that the TA list is increased or decreased by one or several TAIs, the MME does not transmit the unchanged TAI to the UE, but sends the TAI information carrying the special identification information and the changed TAI information to the UE. a message, the special identification information is an indication of increasing or decreasing one or several TAIs;

If the TA list allocated by the MME to the UE changes, the TA list information carrying the change is sent to the UE. If the MME allocates a new S-TMSI to the UE, it carries the new S-TMSI information, and if no new S-TMSI is allocated, carries the old S-TMSI information.

Step 604: The UE acquires TA list information.

If the UE receives the changed TA list information in the TAU accept message sent by the MME, the UE will obtain the changed TA list information. If the UE receives the TAU accept message sent by the MME and carries the special identifier information, the UE according to the special The indication of the identification information uses the original TA list, or uses the TA list after adding or subtracting one or several TAIs from the original TA list.

Step 605: After receiving the new S-TMSI allocated by the MME, the UE returns a TAU complete message to the MME to confirm that the newly allocated S-TMSI is successfully received.

As shown in FIG. 7, a flowchart of a third embodiment of a method for allocating and acquiring location area identifier information according to the present invention, where the UE initiates an RAU, includes the following steps:

Step 701: The UE sends a RAU request message to the SGSN, where the message carries information such as an update type.

Step 702: The SGSN determines, according to the information reported by the UE, whether to perform authentication with the UE, and if necessary, interacts with the HSS to perform a security function.

Step 703: The SGSN sends a RAU accept message to the UE.

In step 703, the SGSN first determines whether the RAI is allocated to the UE, and if The SGSN does not change the RAI allocated to the UE, and the SGSN sends a message carrying the special identifier information to the UE to indicate that the RAI has not changed. The special identifier information may be a flag bit or a special cause value. The empty RAI does not send RAI information. The specific manner of sending an empty RAI is that the RAI carried in the RAU accept message sent by the SGSN is in a TLV (type length value) format, and the length of the parameter RAI is 0, indicating that the RAI is empty; the specific manner of not transmitting the RAI information is The RAI parameter is optional. When the parameter is not carried in the RAU accept message, the original RAI is still used.

If the RAI allocated by the SGSN to the UE changes, the UE is sent a message carrying the changed RAI information. If the SGSN allocates a new P-TMSI to the UE, it carries the new P-TMSI information, and if no new P-TMSI is allocated, carries the old P-TMSI information.

Step 704: The UE acquires RAI information. If the RAI accept message sent by the SGSN carries the changed RAI information, the UE will obtain the changed RAI information. If the UE receives the RAU accept message sent by the SGSN, the UE carries the special identifier information. Then the UE uses the original RAI according to the indication of the special identification information. Step 705: After receiving the new P-TMSI message allocated by the SGSN, the UE returns a RAU complete message to the SGSN to confirm that the newly allocated P-TMSI is successfully received.

As shown in FIG. 8, the flowchart of the fourth embodiment of the method for allocating and acquiring location area identifier information is performed by the MME, where the MME initiates an S-TMSI redistribution process, which specifically includes the following steps:

Step 801: The MME sends an S-TMSI reassignment command message to the UE.

The MME first determines whether the TA list is changed for the UE. If the TA list allocated by the MME to the UE does not change, the MME sends a message carrying the special identifier information to the UE to indicate that the TA list has not changed, where the special The identification information may be a flag bit or a special cause value, or may be an empty TA list or no TA List information. The specific manner of sending the empty TA list is the TA carried in the S-TMSI reassignment command message sent by the MME. The list is in the format of the TLV (type length value). When the length of the parameter TA list is 0, the TA list is empty. The specific method of not sending the TA list information is that the TA list parameter is optional (optional), when it is heavy in S-TMSI. When the allocation command message TAU accepts the message without carrying the parameter, it means that the original TA list is still used.

If the TA list allocated by the MME to the UE changes, but the change is only that the TA list is increased or decreased by one or several TAIs, the MME does not transmit the unchanged TAI to the UE, but sends the special identification information and the changed TAI information to the UE. The special identification information is an indication of increasing or decreasing one or several TAIs;

If the TA list allocated by the MME is changed, the UE sends the TA list information carrying the change; the MME allocates a new S-TMSI to the UE, and carries the new S-TMSI information.

Step 802: The UE acquires TA list information. If the UE receives the changed TA list information in the S-TMSI re-allocation message sent by the MME, the UE will obtain the changed TA list information; if the UE receives the S-TMSI re-allocation message sent by the MME, the special identifier is carried in the UE. If the information is used, the UE uses the original TA list according to the indication of the special identification information, or uses the TA list after adding or decreasing one or several TAIs in the original TA list.

Step 803: The UE returns an S-TMSI re-allocation complete message to the MME to confirm that the new S-TMSI information has been correctly received.

As shown in FIG. 9, a flowchart of a fifth embodiment of a method for allocating and acquiring location area identifier information according to the present invention, where the SGSN initiates a P-TMSI redistribution process, specifically includes the following steps: Step 901: The SGSN sends a P to the UE. - TMSI redistributes messages.

The SGSN first determines whether the RAI is changed for the UE. If the RAI of the SGSN is not changed, the SGSN sends a message carrying the special identification information to the UE to indicate that the RA has not changed. The special identifier information may be a flag. The bit or special cause (Cause) value can also be an empty RAI or no RAI information. Wherein, the specific way of sending an empty RAI is, The RAI carried in the P-TMSI re-allocation message sent by the SGSN is in the format of the TLV (type length value). When the length of the parameter RAI is 0, the RAI is null. The specific mode of not transmitting the RAI information is: the RAI parameter is optional. When the parameter is not carried in the P-TMSI reallocation message, it means that the original RAI is still used.

If the RAI allocated by the SGSN to the UE changes, the RAI information carrying the change is sent to the UE. The SGSN allocates a new P-TMSI to the UE and carries the new P-TMSI information.

Step 902: The UE acquires RAI information. In step 902, if the UE receives the changed RAI information in the P-TMSI re-allocation message sent by the SGSN, the UE will acquire the changed RAI information; if the UE receives the P-TMSI re-allocation message sent by the SGSN, Carrying the special identification information, the UE uses the original RAI according to the indication of the special identification information. Step 903: The UE returns a P-TMSI re-allocation complete message to the SGSN to confirm that the new P-TMSI information has been correctly received. As shown in FIG. 10, a flowchart of a sixth embodiment of a method for allocating and acquiring location area identifier information according to the present invention, wherein, in the restriction signaling, a routing area update procedure initiated by a UE in 2G/3G is as follows: Step 1001, UE Sending a RAU request message to the SGSN, where the message carries information such as an update type;

Step 1002: The SGSN determines, according to the information reported by the UE, whether it needs to perform authentication with the UE, and if necessary, interacts with the HSS to perform a security function.

Step 1003: The SGSN sends an RAU accept message to the UE. The message carries information such as P-TMSI, RAI, and S-TMSL TA list. In step 1003, the SGSN determines whether the TA list changes. If the TA list does not change, The SGSN sends a message carrying the special identification information to the UE to indicate that the TA list1 has not changed. The special identification information may be a flag bit or a special cause value, or may be an empty TA list/I or not. Send TA List information. The specific manner of sending an empty TA list is, the SGSN sends The TA list carried in the RAU accept message is in the format of the TLV (type length value). When the length of the parameter TA list is 0, the TA list is empty. The specific method of not sending the TA List1 information is that the TA list parameter is optional (optional) ), when the parameter is not carried in the RAU accept message, it means that the original TA list is still used.

If the TA list changes, but the change is only the TA list increases or decreases by one or several TAIs, the SGSN does not transmit the unchanged TAI to the UE, but sends the special identification information and the changed TAI information to the UE, where the special identification information is Increase or decrease the indication of one or several TAIs;

In this embodiment, the processing of the RAI by the SGSN may be consistent with the third embodiment, and will not be described again. The unchanged RAI information may still be sent when the RAI is unchanged, because one RAI information occupies less air interface resources.

If the TA list/RAI changes, the SGSN sends the TA list/RAI message carrying the change to the UE. If the SGSN allocates a new P-TMSI to the UE, it carries the new P-TMSI information, and if no new P-TMSI is allocated, carries the old P-TMSI information.

Step 1004: The UE acquires TA list/RAI information.

If the UE receives the changed TA list/RAI information in the RAU accept message sent by the SGSN, the UE will obtain the changed TA list/RAI information. If the UE receives the RAU accept message sent by the SGSN, the UE carries the special identifier information. Then, the UE uses the original TA list/RAI according to the indication of the special identification information, or uses the TA list after adding or decreasing one or several TAIs in the original TA list.

Step 1005: After receiving the new P-TMSI information allocated by the SGSN, the UE returns a RAU complete message to the SGSN to confirm that the newly allocated P-TMSI has been successfully received.

As shown in FIG. 11 , a flowchart of a seventh embodiment of a method for allocating and acquiring location area identifier information according to the present invention, where the TAU initiated by the UE in the LTE under the restriction signaling, the specific steps are as follows: Step 1101, the UE gives The MME sends a TAU request message, where the message carries information such as an update type. Step 1102: The MME determines, according to the information reported by the UE, whether to perform authentication with the UE, and if necessary, performs a security function with the HSS.

Step 1103: The MME sends a TAU accept message to the UE. The message carries information such as P-TMSI, RAI, and S-TMSL TA list. In step 1103, the MME determines whether the RAI changes. If the RAI does not change, the MME sends a message carrying the special identification information to the UE. The indication RA does not change, wherein the special identification information may be a flag bit or a special cause value, or may be an empty RAI or no RAI information. The specific manner of sending an empty RAI is that the RAI carried in the TAU accept message sent by the MME is in a TLV (type length value) format, and the length of the parameter RAI is 0, indicating that the RAI is null; the specific manner of not transmitting the RAI information is The RAI parameter is optional. When the parameter is not carried in the TAU accept message, the original RAI is still used.

In this embodiment, the processing of the TA list by the MME is the same as that of the second embodiment, and is not further described.

If the TA list/RAI changes, the MME sends the TA list/RAI information carrying the change to the UE. If the MME allocates a new S-TMSI to the UE, it carries the new S-TMSI information, and if no new S-TMSI is allocated, carries the old S-TMSI information.

Step 1104: The UE acquires RAI/TA list information.

If the UE receives the changed RAI/TA list information in the TAU accept message sent by the MME, the UE will obtain the changed RAI/TA list information. If the UE receives the TAU accept message sent by the MME, the UE carries the special identifier information. Then, the UE uses the original RAI/TA list according to the indication of the special identification information, or uses the TA list after adding or decreasing one or several TAIs in the original TA list.

Step 1105: After receiving the new S-TMSI information allocated by the MME, the UE returns a TAU complete message to the MME to confirm that the newly allocated S-TMSI has been successfully received.

In all the above embodiments, the routing area does not have the concept of a List. If the concept of the RA List is introduced in the routing area, the processing manner is the same as that of the TA list, and the tracking area identifier and other location areas are the same. Domain identifications or lists are also suitable for use in the present invention. In addition, in the above embodiment, the TA list/RAI is a tracking area/routing area that the UE can access. If the MME/SGSN allocates a prohibited TA list/RAI ( prohibited TA list/RAI) to the UE, the processing flow and the above The method is consistent: a flag bit or a special cause cause value may be sent to the UE, indicating that the prohibited TA list/RAI has not changed, or the UE may send an empty prohibited TA list/RAI or not to transmit prohibited TA List/RAI information by the UE. It is determined that the previously prohibited TA list/RAI is still used to save the network resources on the wireless side. In the above, the method for allocating and acquiring the location area identifier information in the present invention sends the special identifier information to the UE by determining that the TA list/RAI allocated by the MME/SGSN to the UE does not change. Repeating to send the unchanged location area identification information to the UE, so that the network will not be unnecessarily burdened, especially when the control plane entity allocates more location area identification information, which will save more wireless side. Air interface resources.

As shown in FIG. 12, a schematic structural diagram of a first embodiment of a system for allocating and acquiring location area identification information according to the present invention is shown. The system 11 includes: a control plane entity 13, configured to determine whether the allocated location area identifier information is the first location area identifier information, and if the first location area identifier information is used, send a message carrying the corresponding special identifier information to the terminal;

The terminal 12 is configured to receive the message carrying the special identifier information, and obtain the corresponding first location area identifier information according to the special identifier information.

The control plane entity 13 includes a first receiving unit 17, an allocating unit 18, and a second sending unit 19. The terminal 12 includes a first sending unit 14, an obtaining unit 15, and a second receiving unit 16, wherein the first sending unit 14, For transmitting the TAU/RAU request information to the first receiving unit 17; the first receiving unit 17 is configured to receive the TAU/RAU request information sent by the first sending unit 14; the allocating unit 18 is configured to determine whether the allocated location area identification information is Identifying information for the first location area; wherein, the first location area identifier information is location area identifier information that is originally used; The sending unit 19 sends a message carrying the special identification information to the second receiving unit 16; wherein the special identification information is a flag bit, or a special cause value, or an empty TA list/RAI, or the message does not carry the TA list/RAI The specific manner of sending the empty TA list is that the TAU/RAU accept message sent by the MME/SGSN and the TA list/RAI carried in the TMSI reassignment message are in TLV (type length value) format, and the length of the parameter TA list/RAI is 0 indicates that the TA list/RAI is empty; the specific method of not transmitting the TA list/RAI information is that the TA list/RAI parameter is optional, and is not carried in the TAU/RAU accept message and the TMSI reassignment message. When the parameter is used, it means that the original TA list/RAI is still used. The first location area identifier information is a location area list corresponding to the at least one location area identifier information corresponding to the original used location area list. The first sending unit 17 sends the special carrying unit to the second receiving unit 16. A message identifying information, which is an indication of increasing or decreasing at least one location area identification information and a changed location area identification letter, packet, cancellation, packet, and. The obtaining unit 15 is configured to receive the message carrying the special identifier information according to the second receiving unit 16, and obtain the corresponding location area identifier information according to the special identifier information.

The first location area identifier information is a tracking area identifier or a tracking area list or a routing area identifier or a routing area list or other location area identifier or list. FIG. 13 is a schematic structural diagram of a second embodiment of a system for allocating and acquiring location area identification information according to the present invention. The system 21 includes: a control plane entity 23, configured to determine whether the allocated location area identifier information is the first location area identifier information, and if the first location area identifier information is used, send a message carrying the special identifier information to the terminal; And receiving the message carrying the special identifier information, and acquiring the corresponding first location area identifier information according to the special identifier information. The control plane entity 23 includes an allocating unit 28 and a sending unit 29: The terminal 22 includes an obtaining unit 25 and a receiving unit 26, wherein the allocating unit 28 is configured to initiate a request for temporary mobile subscriber identity information reallocation to the terminal 22. The information, and determining whether the allocated location area identification information is the first location area identification information; wherein, if the first location area identification information is the originally used location area identification information, the sending unit 29 sends the carrying special identifier to the receiving unit 26. a message of information, wherein the special identification information is a flag bit, or a special cause value, or an empty TA list/RAL or a message does not carry a TA list/RAI; wherein the specific manner of sending the empty TA list is, MME/SGSN The TA list/RAI carried in the transmitted TAU/RAU accept message and the TMSI reassignment message is in the TLV (type length value) format. When the length of the parameter TA list/RAI is 0, the TA list/RAI is empty; the TA list is not sent. The specific way of the /RAI information is that the TA list/RAI parameter is optional. When the parameter is not carried in the TAU/RAU accept message and the TMSI redistribution message, the original TA list/RAI is still used. If the first location area identifier information is a location area list after the at least one location area identifier information is added or decreased correspondingly to the originally used location area list, the sending unit 29 sends the special identifier information to the receiving unit 26. Information with the changed location area identification information, wherein the special identification information is an indication of increasing or decreasing at least one location area identification information.

The obtaining unit 25 is configured to obtain corresponding location area identifier information according to the special identifier information received by the receiving unit 26, where the first location area identifier information is a tracking area identifier or a tracking area list or a routing area identifier or a routing area list. Or other location area identifier or list. The system for allocating and obtaining location area identification information provided by the embodiment of the present invention has a simple networking structure and reduces the burden of network signal processing, especially when the control plane entity allocates more location area identification information. More wireless side air interface resources will be saved. A person skilled in the art can understand that all or part of the steps carried by the method of the foregoing embodiment can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. , including one or a combination of the steps of the method embodiments. In addition, each functional unit in various embodiments of the present invention may be integrated in one processing module. It is also possible that each unit physically exists alone, or two or more units may be integrated in one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as separate products, may also be stored in a computer readable storage medium. The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

A method for obtaining location area identification information, comprising the steps of: receiving a message carrying special identification information; and acquiring corresponding location area identification information according to the special identification information.

The method for obtaining location area identification information according to claim 1, wherein when the special identification information is a flag bit, or a special cause value, or an empty location area identifier information, or a message does not carry The location identifier information parameter is used to obtain the corresponding location area identifier information as the original location area identifier information. When the special identifier information is an indication to increase or decrease at least one location area identifier information, the corresponding location area identifier information is obtained. A list of location areas after the at least one location area identification information is added or decreased on the originally used location area list.

The method for obtaining location area identification information according to claim 2, wherein the empty location area identification information is location area identification information in which the identification type length value is 0 in the location area identification information.

The method for obtaining the location area identification information according to any one of claims 1 to 3, wherein the receiving the message carrying the special identification information is receiving a location area update accept message carrying the special identification information; or

The receiving the message carrying the special identification information is a message for receiving the re-allocation of the temporary mobile user identification information carrying the special identification information.

The method for obtaining the location area identification information according to claim 4, wherein before the receiving the location area update accept message operation carrying the special identification information, the method further includes:

Sending location area update request information; when it is determined according to the location area update request information that authentication is required, a security function is performed.

The method for obtaining location area identification information according to any one of claims 1 to 3, wherein the location area identification information is a tracking area identifier, a tracking area list or a routing area identifier, or a routing area list.

A device for acquiring location area identification information, comprising: a receiving unit, configured to receive a message carrying special identification information; and an acquiring unit, configured to acquire corresponding location area identification information according to the special identification information.

The device for acquiring location area identification information according to claim 7, wherein when the special identification information is a flag bit, or a special cause value, or an empty location area identifier information, or a message does not carry The location identification information parameter, the acquiring unit acquires the original usage location area identification information; when the special identification information is an indication of increasing or decreasing at least one location area identification information, the acquiring unit acquires the corresponding increase or decrease on the original used location area list. At least one location area identifies the list of location areas after the information.

The device for acquiring location area identification information according to any one of claims 7 or 8, wherein the receiving unit receives the message carrying the special identification information to receive the message that the location area carrying the special identification information is updated and accepted. Or the receiving unit receives the message carrying the special identification information to receive the re-allocation of the temporary mobile user identification information carrying the special identification information.

A method for assigning location area identification information, comprising: the following steps: when the location area identification information is the first location area identification information, sending the corresponding carrying special identification information according to the first location area identification information Message.

The method for assigning location area identification information according to claim 10, wherein when the first location area identification information is the original location area identification information, the special identification information carried in the sending message is sent. Carry a marker bit, or a special cause value, or an empty location area identifier The location identifier information parameter is not carried in the information, or the message; when the first location area identifier information is a location area list corresponding to the location area identifier information that is added or decreased on the original used location area list, the message is sent in the message. The special identifier is carried to carry an indication of increasing or decreasing at least one location area identification information.

The method for allocating location area identification information according to claim 10 or 11, wherein the sending the corresponding message carrying the special identification information is sending a corresponding location area update accept message carrying the special identification information. Or the corresponding message carrying the special identification information is a message for re-allocating the corresponding temporary mobile user identification information carrying the special identification information.

13. The method of assigning location area identification information according to claim 10 or 11, wherein the method further comprises

Receiving request information of the location area update; determining that authentication is required according to the request information, and performing a security function.

A device for assigning location area identification information, comprising: an allocation unit, configured to determine whether the allocated location area identification information is first location area identification information;

And a sending unit, configured to send, according to the first location area identifier information, a message carrying the special identifier information.

The device for assigning location area identification information according to claim 14, wherein when the first location area identification information is the original location area identification information, the sending unit sends the special identifier carried in the message as a flag bit, or a special cause value, or an empty location area identification information, or a message does not carry a location identification information parameter; when the first location area identification information is correspondingly increased or decreased on the original used location area list A location area list after the location area identification information, and the sending message carries a special identifier To carry an indication of increasing or decreasing at least one location area identification information.

The apparatus for assigning location area identification information according to claim 14 or 15, wherein the location area identification information is a tracking area identification or a tracking area list or a routing area identifier or a routing area list.

17. A method for allocating and obtaining location area identification information, comprising the steps of:

The control plane entity determines that the allocated location area identifier information is the first location area identifier information, and sends a message carrying the special identifier information to the terminal according to the first location area identifier information; after receiving the message carrying the special identifier information, the terminal according to the The special identification information acquires corresponding first location area identification information.

18. The method of allocating and acquiring location area identification information according to claim 17, wherein:

When the first location area identifier information is the original location area identifier information, the special identifier information carried in the sent message is a flag bit, or a special cause value, or an empty location area identifier information, or the message does not carry Location identification information parameter;

When the first location area identifier information is a location area list that is corresponding to the location area information list that is used to increase or decrease at least one location area identifier information, the sending message carries a special identifier to carry or increase at least one location area. An indication of the identification information.

A system for allocating and acquiring location area identification information, comprising: a control plane entity, configured to determine whether the allocated location area identification information is the first location area identification information, and if the first location area identification information is Sending a message carrying the special identifier information; the terminal is configured to receive the message carrying the special identifier information, and obtain the corresponding first location area identifier information according to the special identifier information.

20. The system for allocating and acquiring location area identification information according to claim 19, The sign is that